Hole saw



FIG. 1 is a perspective view of a hole saw showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view from the bottom vision thereof.

The broken lines are shown for illustrative purposes only and form no part of claimed design. 

CLAIM The ornamental design for a hole saw, as shown and described. 